Watch: Public Enemy Performs at 2013 Made in America Festival

Iconic rap group Public Enemy was among the performers who graced the stage Saturday night during day one of the 2013 “Made in America” music festival in Philly.

Backed by a DJ, live band and even backup dancers, Chuck D and Flavor Flav delivered what Philly.com called a “politically charged set.” Their dancers were dressed in all-black military clothing, and their set featured their trademark political commentary.

At one point during the performance, Check D shouted, “He got killed in cold blood!” referring to the shooting death of Trayvon Martin and the recent acquittal of his killer George Zimmerman.

The rap vets also spoke out against racism , on behalf of underfunded public schools in Philadelphia, and in support of convicted cop killer Mumia Abu Jamal.

Before they hit the stage, Public Enemy reps held up a huge banner that read “FREE MUMIA ABU JAMAL” in reference to the man who is currently serving a life sentence in prison for the 1981 murder of Philadelphia Police Officer Daniel Faulkner.

WATCH PUBLIC ENEMY PERFORM AT THE 2013 “MADE IN AMERICA FESTIVAL ABOVE!